linux-kernel - Re: [PATCH v4 1/4] Documentation: dt-bindings: Describe SROMc configuration

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Message-id: <56385FCC.1090007@samsung.com>
Date:	Tue, 03 Nov 2015 16:18:36 +0900
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Pavel Fedin <p.fedin@...sung.com>, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	k.kozlowski.k@...il.com, 'Mark Rutland' <mark.rutland@....com>,
	'Pawel Moll' <pawel.moll@....com>,
	'Ian Campbell' <ijc+devicetree@...lion.org.uk>,
	'Rob Herring' <robh+dt@...nel.org>,
	'Kukjin Kim' <kgene@...nel.org>,
	'Kumar Gala' <galak@...eaurora.org>
Subject: Re: [PATCH v4 1/4] Documentation: dt-bindings: Describe SROMc
 configuration

On 03.11.2015 15:58, Pavel Fedin wrote:
>  Hello!
> 
>>>>> --- cut exynos5410.dtsi ---
>>>>> 		sromc: sromc@...50000 {
>>>>> 			#address-cells = <2>;
>>>>> 			#size-cells = <1>;
>>>>> 			ranges = <0 0 0x04000000 0x20000
>>>>> 				  1 0 0x05000000 0x20000
>>>>> 				  2 0 0x06000000 0x20000
>>>>> 				  3 0 0x07000000 0x20000>;
>>>>
>>>> Do you have to use 2 cells for address? Cannot it be:
>>>>  			ranges = <0 0x04000000 0x20000
>>>>  				  1 0x05000000 0x20000
>>>>  				  2 0x06000000 0x20000
>>>>  				  3 0x07000000 0x20000>;
>>>
>>>  I tried this first, but it didn't work, and ranges translation
>>> gave me something really weird (like addr = 0x80 and
>>> size = 0x04000004).
>>
>> Did you change the address-cells to <1>?
> 
>  Of course i did.

I saw some other nodes use the ranges without the offset but maybe some
more steps are required for such configuration.

So anyway send the version with the child offset and I will try to
figure out why it is required.

Best regards,
Krzysztof

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